Combination fill, air vent, and relief coupling



COMBINATION FILL, AIR VENT, AND RELIEF COUPLING Filed Nov. 12, 1925 2Shams-Sheet l ATTORNEY.

1 14, 1929.. m3. H. E'HLERs COMBINATION FILL, AIR VENT, AND RELIEFCOUPLING Filed Nov. 12 1925 2 Sheets-Sheet 2 A TTORNEY.

l atented a r tl EENNSWLWMM.

ttpplieati'ion fitted Ialovernhcr dilly invention relates to apparatusutilitaable in (.OillbilliillOll Will-l1 closure structure carried in a.port, as the inlet port at a tanlt.

or receptacle tor controlling the pressure within the tank. torcontrolling the passage or gaseous or liquid material irom the tank, andtor other purposes.

in accordance with my invention, suitahle closure structure carried hythe inlet port ot a. tank. as aforesaid, is so related to mecha nisnicontrolling the admission of a pressure applying medium to the tank thatthe closure structure may not he removed Without ti rstactuating thecontrol mechanism to check admission oi the pressure-applying medium.Further in accordance with my invention the gaseous ressure vvithin atanlt or receptacle is controlled by a device rendered operative uponincrease in pressure ahovea predetermined ralue to discharge the gaseousmedium to a suitahle destination, as a chainher leading to theatmosphere, and more particularly, said chamher encloses mechanismpermitting passage oil a gaseous medium therethrough hut preventingpassage oil a liquid along the path talten by said medium. lilyinvention resides in apparatus oi the character herealter described andclaimed. For an illustration oil one oil the terms my apparatus maytalte, reiterence is to he had to the accompanying drawing in which:

Figure l is a vertical sectional view at apparatus constructed inaccordance with my invention taken on line l-l oi Fig. t.

Figure 2 is a vertical sectional vieiv talren on line 22 oil rig. ll.

li igure 3 is a vertical sectional view at a till hashing.

Figure t is a plan view, partly in section oil apparatus constructed inaccordance with my invention.

Figure 5 is a horizontal sectional view showing a control valve invopenposition Referring to Figs. It and 2, an elongated casing l is securedin any suitable manner to a pipe or conduit 2 opening into a suit-ahletank or receptacle (not shown). lP'relerahlyl, casing l is provided witha flange 3 secured to a corresponding tlange d oi conduit 2 hr holts 5,or equivalent.

Casing 1 comprises an internally threaded collar it having a. diametersomewhat less than the diameter of the casing, said collar lltl, lllhli.

tterial llt'o. titldttlil.

receiving a threaded pipe "2 spaced train the circumferential 'ivall ot'casing l and conduit 2 and extending into the tank suhstantiallpinparallel relation with respect to conduit A closure cap 8 received hpthesopen end ot' casing 1 comprises a stem 2 a dish lit, and a circularthreaded sleeve ll, all termed, preferably as one integral part. .dtdetach ahle plug l2 threaded into an opening. in the stem 9 may heremoved-to permit insertion oil a suitable tool tor a purposehereina'lter described. ll washer l3, oi suitahle material as acomposition oil asbestos and suitahle hinding material, is carried hp avalve dish it formed integrally With a sleeve l5, provided with a seriesot' pert'orations l6. Sleeve lit extends into stem 9 and is providedwith a circumferential groove ll receiving one or more scrcvvs ll, orsimilar retaining devices. Ea'leeve i5 is threaded at one end to receivea cap ltl having a longitudinally eatending passage receiving the shankl9 oil a valve disk 20 hiased hy a coil spring 21, or equiva-' lent,into engagement with the trail oil an opening 22 in the ralve dislr l t.@hviously the compression ot spring 21 and the lorce necessargq, to movedish 20 trom its seat may he varied hp adjusting cap l3 longitudinallyof sleeve lh.

'llpon removal oil cap 12 ilrom stem 9, as descrihed above, a suitahletool may he inserted interiorly oil said stem into engagement with shankl9 oil valve dish 2t). "thereupon, h 7 rotating said tool valve dish 2dis rendered ettective to grind its seat.

Casing l is provided with an ular llange 28 donning a seat tor thevvasher ltl associated with valvedish it and also tor a flange comprisedin the end oi a fill hashing hereinatter descrihed.

Closure cap it may he removed from casing 1 and a till hashing 2t, llig.t, suhstituted therefor. Bushing 2t comprises an internally threadedcollar 25 adapted toreceive a lit-ting carried h the hose or otherconduit passing the desired liquid into the tanlr. d threaded sleeve26., corresponding in diam eter with sleeve ll oil closure d is receivedhr the threaded end oi casing it. it spout 2L preferahly 'lf'ormedintegrally rvith sleeve 26, terminates in a tdange 28 adapted to restupon the collar h.

Referring to hig. l a hollow angular ealltl ltl

tltlt 29, suitable tension 29, preferably formed integrally with casing1 is secured to aconduit 30, Fig. 4, in any suitable manner, preferably,however, by a flange 31 formed integrally with said extension, andfastened by bolts 32 to a corresponding flange 33 formed integrally withconduit 30.

A guide member 34 freely slidable in the passage between hollowextension 29 and the interior of easing l is suitably connected to a rod35 extending into a recessed cap 36 fitted in the end of extension 29. Acoil spring 37, or equivalent, confined around rod 35 be: tween cap 36and a collar 38 secured to said rod biases the latter toward the right(Fig. 1) and holds a disk 39 of suitable material, as a composition ofasbestos and a binding agent, confine-d between guide member 34 and adisk 4O forming a part of said rod in engagement with a valve seat 41,

. A slot 42 in rod 35 receives a cam lever 43- carried by a shaft 44 oneend of which is mounted in a bearing 45 comprised in extension 29. Acollar 46 fitted into an opening in the wall of extension 29 inalignment with bearing 45 receives shaft 44 which is extended into aregion lying in substantially the same plane as the top of cap 8. Alever 47 pivoted to the end of shaft 44 has a hook 48 which, at times,may be held in engagement with cap 8, as hereinafter described. Shaft 44may be secured against axial movement with respect to extension 29 inany desired manner, preferably, however, by utilizing a collar 49secured to said shaft and engaging the inner surface of collar 46.

To prevent leakage from within extension packing material 50 may beplaced interiorly of a threaded extension 51 of collar 46 and compressedby a gland 52 controlled by a follower nut 53.

Referring to Figs. 2 and 4, the casing 1 is shown as provided with anaperture 54 opening into a float box 55 secured to casing 1 in anysuitable manner, preferably, however, by a flange 56 formed integrallywith said float box which is fastened by bolts 57 to a correspondingflange 58 on casing 1. A plate 59 retained between flanges 56 and 58 hasan opening in alignment with aperture 54. A flapper plate 60 constructedpreferably of aluminum is pivotally mounted on plate 59 and rests uponaspherical member 61, of cork, or so constructed as to be readilydisplaceable by the liquid stored within the tank. A wall 62 perforatedas indicated at 62 divides floatbox 55 into two chambers and is providedwith a threaded recess receiving a collar 63 serving as a support for asecond pivoted flapper plate 64. A conduit 65 leading preferably to theatmosphere is'connected to float box 55 in any suitable manner,preferably, however, by a flange 66 formed integrally with said floatbox which is secured by bolts 67 to a corresponding flange 68 carried byconduit 65.

Apparatus of the character herein described is designed especially foruse with a tank or receptacle containing gasoline under air pressureutilized to force the liquid from a discharge port.

To fill the tank, fill bushing 24 is substituted for closure cap 8 andthe liquid, as gasoline, is passed through said fill bushing and pipe 7into the tank. Meanwhile, air displaced by the liquid rises exteriorlyof pipe 7 and passes through aperture 54 into float. box 55 and thencealong conduit 65. During passage of air in this manner, the relativelylight flapper plate 60 prevents generation of air currents and holdsspherical member 61 in the full line position shown in Fig. 2. If aplate of this character is not utilized, spherical member 61 willusually be impelled by the air currents infloat box 55 into the passagethrough collar 63 thereby closing this passage end preventing escape ofthe displaced air.

A tank of the character herein described is usually filled by attachinga hose to the till bushing and permitting the liquid to flow into thetank under the influence of gravity. Under such conditions, it mayhappen that the attendant will fail to observe when the tank iStfLllland, accordingly, the overflowing I 0 liquid upon entering float box 55along the same path taken by the displaced air, as described above, willmove spherical member 61 into the passage through collar 63 and restrainpassage of but a negligible quantity of liquid through conduit 65. In anaction of this character, flapper plate 60 is ineti'eetive to holdspherical member 61 in the full line position shown in Fig. 2. It willbe observed that when the overflowing stream has been cutoff,perforation 62 serves to drain the chamber containing spherical member61 and thereby permit said member to resume its normal position at the.bottom of said chamber.

When the tank has been filled to the desired extent, fill bushing 24 isremoved and closure cap 8 placed in position. As said ea i is threadedinto casing 1, washer 13 (.tllllCt by disk 14 finally engages flange 23whereupon, due to the presence of groove 17 and screws 17 rotation ofdisk 14 ceases, despite continued rotation of cap 8. As a result,

washer 13 is compressed in an axial direction ed, arm 47 is moved fromthe full-line position to the dotted line position of Fig. 4. In sodoing, said arm is swung vertically on its pivot, passed over the top ofcap 8 and then l ll til

prior to the time that cap it 'lollovvs, theretore, he readily removedWithout dropped on. the tar side thereoil. lllovement out arm ll in thismanner edects partial rotation at shalt aid and movement oi earn itton'ard the let't (Fig. l), or into the position shovvn in Fig. 5,vvherehy disk 39 is moved trom its seat tl, against the ezipansivetendency oi spring 3i". Accordingly, it hook til at arm all" is notdropped hehind the cap 8 as indicated hy the dotted lines in Fig. t,spring 3i vvill eapand and move disk 39 into engagement with its seat lland lever at will he strung hack into the position shown in tall linesin ig. t.

Fipe leads to a device under pressure, as the discharge outlet oil anair compressor. Accordingly, when disk 39 is moved from its seat, asaioresaid, air under pressure is supplied to the interior oil casing land to the surtace oil the liquid to eid'ect dis charge thereoii.

it is to he noted that closure cap d may not he removed troin casing ituntil alter hook d8 has heen raised and arm all permitted to svvingsupplying a gas to the lull line position oi Fig. t, this action,

as stated ahove, positioning disk 39 on its scat ll and cutting oil thesupplv of air to casing l. Further, it is to he noted that it isnecessary to retract cap 8 hut a small amount to disengage disk l l lromits seatand that continued retraction oit said cap vvidens the gaphetvveen said disk and its seat. has a result, 8 is entirely tree lromcasing l, the air pressure in the tank and said casing has heen verymaterially reduced due to the escape oi air hetvveen disk it and itsseat and thence to and through tloat hot 55, that closure cap 8 maydamage to the operator manipulating the same, such as might occur it thelull force of the air pressure in casing l was tree to impel the closurecap just alter removal trom saidcasing. Further, passage of gasolinesaturated vapors 'lrom the top oif casing l is likewise prevented anyvapors oil this character having into heat hon helore cap 8 is entirelydisengaged trom said casing.

idy adjusting cap it aaially oi sleeve l5, the enpansive tendency ol'spring Qt may he so regulated that valve disk 20 will move trom its seatwhen the pressure in casing it exceeds a predetermined value, and whenthis occurs, air escapes through openings l6 and aperture 5t into iloather 55, thence through conduit tih.

l 'lapper plate tit svvings lreely to the dotted line position oi Fig. 2to permit passage ot air or liquid tovvard the vent tank hut acts as acheck valve and closes the passage through collar as, it torany reason,material should attempt to pass in a reverse direction,

What It claim is:

l. in combination, closure structure tor the port ot a tank. a conduitapplying a gas under pressure to the liquid in said a valve inpasscdhat) terposed in said conduit, and structure intervening hetvveen saidclosure structure and valve to hold the latter in open position,

2. in combination, closure structure tor the port ot a tank, a conduitapplying a gas under pressure to the liquid in said tank, a valve interposed in said conduit, and an arm controlling said valve adapted toengage said closure structure to hold the valve in open position.

3. in combination, closure structure tor the port at a tank, a conduitapplying a gas under pressure to the liquid in said tank, valve hiasedto position closing said conduit, and structure connected to said valveadapted to engage said closure st rueture to hold the valve in openposition.

d. in combination, closure structure tor the port of a tank, a conduitapplying a gas under pressure to the liquid in said tank, a valve hiasedto position closing said conduit, and structure connected to said valveadapted to engage said closure structure to hold the valve in openposition and trcely movable trom engagement therewith to permit saidvalve to resume position closing said conduit.

ti. lin comhination, closure structure tor the port of a tank, a conduitapplying a gas under pressure to the liquid in said tank, a valve hiasedto position closing said conduit, a shalt controlling said valveeiitending adjacent said closure structure, and an arm connected to saidshalt engaging said closure structure to i hold the valvein openposition.

ti. ln comhination, closure structure tor the port at a tank, a conduitapplying gas under pressure to the liquid in said tank, a valve hiasedto position closing said conduit, a shalt controlling said valveextending adjacent said closure structure, and an arm pivoted to saidshalt engaging said closure structure to hold the valve in openposition.

'i'. -.hpparatus ot the character described comprising a portcommunicating vvith a tank containing a liquid under gaseous pressure,and closure cap structure closing said port in tvvo regions and movahleto first open in the region nearer the tank and then in the otherregion.

d. Apparatus ot the character descrihed comprising a port communicatingwith a tank containing a liquid under gaseous pressure, a closure capclosing said port in one region, and a second closure cap rotatahlycarried hy said first-mentioned cap closing said port in aregi'on nearerthe tank, said clo sure capsmovahle to lirstopen in the region nearerthe tank and then in the other region.

9. Apparatus oil the character descrihed comprising a port commicatingwith a tank containing a liquid under gaseous pres sure, a closure capthreaded to said port in one region. and a second closure cap rotatalolycarried by said first-mentioned cap closing said port in a region nearerthe tank, said closure caps movahle to open in the region nearer tnetank and then in the other region.

t 10. Apparatus of the character described comprising a portcommunicating with a tank containing a liquid under gaseous pressure,closure cap structure closing said port in two regions and movable tofirst open in the region nearer the tank andthen in the other region,said port between said regions, and relief Valve structure operable uponrise in gaseous pressure within the tank above 'a predetermined value toopen a pathbetween said tank and conduit.

11. Apparatus of the character described comprising a port communicatingwith a tank adapted to contain a liquid, a conduit, a float boxcommunicating with said port and conduit, a member readily displaceableby liquid in said float box, and a vane of relatively light materialresting upon said mem- 12. Apparatus of the character describedcomprising a port communicating with a tank adapted to contain a liquid,a conduit, a float box communicating with said port and conduit, amember readily displaceable by liquid in said float box, a vane ofrelatively light material resting upon said member, and means other thansaid conduit for draining liquid from said float box.

13. Apparatus of the character described comprising a port communicatingWith a tank adapted to contain a liquid, a conduit,

float box communicating With said port and a conduit communicating withto prevent passage of conduit, a spherical ball readily displaceablc byliquid in said float box, a vane of relatively light material restingupon said ball, means other than said conduit for draining liquid fromsaid float box, and a check valve preventing passage of fluid materialin reverse direction from said conduit toward said port.

14. Apparatus of the character described comprising a conduit openinginto a tank, a float box communicating with said conduit, means in saidfloat box preventing passage of liquid material therethrough butineffective gaseous material. in one direction, and means for preventingthe passage of fluid material through said box in a reverse direction.

15. Apparatus of the character described comprising a conduit openinginto a'tank, a float box communicating with the conduit, a float thereinand a vane controlling the position of said float to prevent passage ofliquid through said box but permitting passage of gaseous materialthcrethrough.

16. Apparatus of the character described comprising a port communicatingwith a tank, a conduit, a float box communicating with saidport andconduit, a float displaceable upoii rise of liquid therein to ('lose thepassage to said conduit, and means normally preventing displacement ofsaid float during passage of gaseous material to prevent generation ofgas currents in said box.

CARL H. EI-ILERS.

